PERKEN, SON & CO. LTD., LondonA quarter-plate brass and mahogany Rayment's Improved patent field camera no. 5785 with maker's label Made by Perken, Son & Co. Ltd., Hatton Garden, London, a brass bound Perken, Son & Rayment Rapid Rectalinear Optimus lens, five double darkslides and tripod head, in a fitted box.